HTS heading 2917 · Chapter 29
HTS 2917: Polycarboxylic acids, their anhydrides, halides,…
HTS heading 2917 covers polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives. It has 32 tariff lines with a duty rate; the general (MFN) rates are 6.5% (22 lines), 4.2% (3 lines), Free (3 lines) and others.
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: | |||||
| 2917.11.00.00 | Oxalic acid, its salts and esters[kg] | 3.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 34.5% | Estimate → |
| 2917.12 | Adipic acid, its salts and esters: | ||||
| 2917.12.10.00 | Adipic acid[kg] | 6.5% | Free (AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 63% | Estimate → |
| Other: | |||||
| 2917.12.20.00 | Plasticizers[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | Estimate → |
| 2917.12.50.00 | Other[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 53.5% | Estimate → |
| 2917.13.00 | Azelaic acid, sebacic acid, their salts and esters | 4.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2917.13.00.30 | Sebacic acid[kg] | Estimate → | |||
| 2917.13.00.90 | Other[kg] | Estimate → | |||
| 2917.14 | Maleic anhydride: | ||||
| 2917.14.10.00 | Derived in whole or in part from benzene or other aromatic hydrocarbons[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 50% | Estimate → |
| 2917.14.50.00 | Other[kg] | 4.2% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 2917.19 | Other: | ||||
| 2917.19.10.00 | Ferrous fumarate[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 45% | Estimate → |
| Fumaric acid: | |||||
| 2917.19.15.00 | Derived in whole or in part from aromatic hydrocarbons[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 87% | Estimate → |
| 2917.19.17.00 | Other[kg] | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| Maleic acid; succinnic acid derived in whole or in part from maleic anhydride or from cyclohexane; glutaric acid derived in whole or in part from cyclopentanone; andanhydrides, halides, peroxides, peroxyacids and other derivatives of adipic acid, of fumaric acid derived in whole or in part from aromatic hydrocarbons, of maleic acid, of succinnic acid derived in whole or in part from maleic anhydride or from cyclohexane or of glutaric acid derived in whole or in part from cyclopentanone, not elsewhere specified or included: | |||||
| 2917.19.20.00 | Products described in additional U.S. note 3 to section VI[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 53.5% | Estimate → |
| Other: | |||||
| 2917.19.23.00 | Maleic acid[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 53.5% | Estimate → |
| 2917.19.27.00 | Other[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 53.5% | Estimate → |
| 2917.19.30.00 | Ethylene brassylate[kg] | 4.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% | Estimate → |
| 2917.19.35.00 | Malonic acid[kg] | Free | 25% | Estimate → | |
| Other: | |||||
| 2917.19.40.00 | Derived in whole or in part from aromatic hydrocarbons[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, K,KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 40% | Estimate → |
| 2917.19.70 | Other | 4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2917.19.70.20 | Plasticizers[kg] | Estimate → | |||
| 2917.19.70.50 | Other[kg] | Estimate → | |||
| 2917.20.00.00 | Cyclanic, cyclenic or cycloterpenic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives[kg] | 4.2% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: | |||||
| 2917.32.00.00 | Dioctyl orthophthalates[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | Estimate → |
| 2917.33.00 | Dinonyl or didecyl orthophthalates | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | |
| 2917.33.00.10 | Diisodecyl orthophthalate[kg] | Estimate → | |||
| 2917.33.00.50 | Other[kg] | Estimate → | |||
| 2917.34.01 | Other esters of orthophthalic acid | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | |
| 2917.34.01.10 | Dibutyl orthophthalate[kg] | Estimate → | |||
| 2917.34.01.50 | Other[kg] | Estimate → | |||
| 2917.35.00.00 | Phthalic anhydride[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 49% | Estimate → |
| 2917.36.00.00 | Terephthalic acid and its salts[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | Estimate → |
| 2917.37.00.00 | Dimethyl terephthalate[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 42% | Estimate → |
| 2917.39 | Other: | ||||
| 2917.39.04.00 | 1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 37% | Estimate → |
| 2917.39.08.00 | Naphthalic anhydride[kg] | Free | 15.4¢/kg + 37% | Estimate → | |
| 2917.39.12.00 | 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)[kg] | Free | 15.4¢/kg + 73% | Estimate → | |
| 2917.39.15.00 | Isophthalic acid[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 40% | Estimate → |
| 2917.39.17.00 | Tetrabromophthalic anhydride[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 73% | Estimate → |
| Other: | |||||
| 2917.39.20.00 | Plasticizers[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% | Estimate → |
| Other: | |||||
| 2917.39.30.00 | Products described in additional U.S. note 3 to section VI[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 73% | Estimate → |
| 2917.39.70.00 | Other[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 73% | Estimate → |
40 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 2917.11.00.00 at the general rate of 3.1%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (3.1%) | $310.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $357.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- K
- Agreement on Trade in Pharmaceutical Products
- KR
- U.S.–Korea FTA (KORUS)
- L
- Uruguay Round concessions on intermediate chemicals for dyes
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.
Frequently asked questions
What is the duty rate for HTS 2917?
Heading 2917 has 32 rate lines. The general (MFN) duty rates are 6.5% (22 lines), 4.2% (3 lines), Free (3 lines), 4.8% (2 lines). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.
Do Section 301, 232 or 201 tariffs apply to HTS 2917?
It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.
What fees are added to an import under HTS 2917?
Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.